I'm considering getting a Toshiba for general home computing and gaming. Anyone have experience with this notebook? Out of the box it has 512 mb dedicated to graphics memory -- is this a true indicator of a above average gaming machine? I've done some basic searches and am finding people generally happy with the machine. Others? I was actually hoping to switch from an IBM to a Mac for my home computer... but I'm not hearing good things about Mac when it comes to gaming. Anyone else? Thanks much!